#==============================================================================
#
# Project:   SharpImage
# Module:    MinMaxCurvatureFlow.py
# Language:  IronPython
# Author:    Dan Mueller
# Date:      $Date: 2007-07-06 10:57:00 +1000 (Fri, 06 Jul 2007) $
# Revision:  $Revision: 2 $
#
# Copyright (c) Queensland University of Technology (QUT) 2007.
# All rights reserved.
#
# This software is distributed WITHOUT ANY WARRANTY; without even
# the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
# PURPOSE.  See the above copyright notices for more information.
#
#==============================================================================

# Import the base script class
import ImageToImageScript
from ImageToImageScript import *

# Add reference and import Denoising library
clr.AddReference("ManagedITK.NoiseFilters")
from itk import *

class MinMaxCurvatureFlowScript(ImageToImageScriptObject):
    # -------------------------------------------------------------------------
    Name = "MinMaxCurvatureFlow"
    Help = """Performs denoising of the input image using min/max curvature driven flow."""
    Parameters = """(double) TimeStep = the time step in the finite difference equation. (0.05)
                    (int) Iterations = the number of iterations. (2)
                    (int) StencilRadius = the radius of the stencil operator. (2)"""
    TimeStep = 0.05
    Iterations = 2
    StencilRadius = 2
    # -------------------------------------------------------------------------

    def ThreadedDoWork(self):
        """ Perform the main functions of the script on a background thread. """
        try:
            self.StartedWork()
            self.WriteInputName()
            filterFlow = itkMinMaxCurvatureFlowImageFilter.New( self.Input, self.Output )
            self.AddEventHandlersToProcessObject( filterFlow )
            filterFlow.SetInput( self.Input )
            filterFlow.TimeStep = self.TimeStep
            filterFlow.NumberOfIterations = self.Iterations
            filterFlow.StencilRadius = self.StencilRadius
            self.WriteLineToConsole( "TimeStep=" + filterFlow.TimeStep.ToString() )
            self.WriteLineToConsole( "Iterations=" + filterFlow.NumberOfIterations.ToString() )
            self.WriteLineToConsole( "StencilRadius=" + filterFlow.StencilRadius.ToString() )
            filterFlow.UpdateLargestPossibleRegion()
            filterFlow.GetOutput( self.Output )
            self.DisconnectInputAndOutput()
            self.DisposeOfObject( filterFlow )
            self.WriteOutputName()
            self.FinishedWork( True )
        except Exception, ex:
            self.HandleException( ex )
            self.FinishedWork( False )
            self.Finalise( )